By Sophie Curtis, video by Robert Midgley:  You've heard of Amazon's plan to deliver packages using drones; now a new company called Starship is promising to disrupt local delivery with the launch of a self-driving robot that can deliver groceries to customers' doors in under 30 minutes for less than £1.

The Starship robot has been developed by Skype co-founders Ahti Heinla and Janus Friis. It drives on pavements at an average speed of 4mph, and uses proprietary mapping and navigation technology to avoid crashing into obstacles, (check out the video we made).  Cont'd...